Perko 0870 Cowl Ventilator, 3 in Duct, Chrome-Plated Zinc Alloy

Overview

The Perko 0870DP0CHR is a cowl ventilator for boats that use a 3 inch duct run to move air into cabins, lockers, and other enclosed spaces on board. It pairs a chrome-plated zinc alloy cowl with a black PERKO-KOTE base, and the duct threads directly into the neck so hose clamps are not required.

The cowl opening measures 7-1/3 square inches, giving you a clear sense of airflow capacity when you are matching it to an existing vent line or planning a new installation. Overall size is 5-1/8 inches long, 4 inches wide, and 3-7/8 inches high, with mounting sized for #10 screws.

This is a straightforward exterior vent for boat owners who want a clean finished look and a direct threaded connection to 3 inch ducting. It makes the most sense where space is limited and where a low-profile ventilator with simple mechanical installation fits the layout of the boat.

Key features

• 3 inch duct threads into the ventilator neck, so no hose clamps are needed at the connection point
• Chrome-plated zinc alloy cowl with a black PERKO-KOTE base
• 7-1/3 square inch cowl opening for air movement through enclosed areas on board
• Compact footprint at 5-1/8 inches long by 4 inches wide and 3-7/8 inches high
• Mounting sized for #10 fasteners, which helps when replacing an existing vent or laying out a new install

Installation and setup

This ventilator is best matched to a boat that already uses 3 inch ducting or has room to route a 3 inch line behind the mounting surface. Because the duct threads into the neck, installation is cleaner than a clamp-on connection and can be easier to service later if the vent line needs to be removed.

Before cutting or replacing a mounting location, it is worth checking the overall footprint and the screw pattern area against the surface available on deck structures, cabin sides, or locker faces. The listed dimensions also help confirm clearance where the cowl needs to sit without interfering with rails, canvas, or other hardware nearby.

Compatibility and fit

This model is a good fit for boats that need passive ventilation rather than powered airflow and already have a suitable path for 3 inch ducting. It suits refit work where the buyer is comparing vent size, mounting space, and connection style rather than shopping by appearance alone.

For owners replacing an older cowl vent, the main checkpoints are duct diameter, overall outside dimensions, and the use of #10 mounting screws. Those details matter more than category labels because they determine whether the unit will drop into the space cleanly and connect to the existing ventilation run without extra adapters.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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